“When Al Gore urges the citizenry to sacrifice their plastic shopping bags, their air-conditioning, their extraneous travel, the agnostics grumble that human activity accounts for just 2 percent of global carbon-dioxide emissions, with the remainder generated by natural processes like plant decay.”

“The principle of fair reduction is based on the concept of historic responsibility. Developed countries finished industrialising first. Thus, over the last 60 years, the developed countries, which represent 17 percent of the world's population, have been responsible for 70 percent of carbon emissions. The developed countries should adjust for this disparity accordingly. In contrast, developing countries, which represent 83 percent of the world's population, have contributed only 30 percent of total carbon emissions over the past 60 years. It is therefore fair to give developing countries more leeway to produce carbon emissions.”

“The essential fact which emerges ... is that the three smallest and most active reservoirs ( of carbon in the global carbon cycle), the atmosphere, the plants and the soil, are all of roughly the same size. This means that large human disturbance of any one of these reservoirs will have large effects on all three. We cannot hope either to understand or to manage the carbon in the atmosphere unless we understand and manage the trees and the soil too.”

“By planting rye I am creating carbon sinks in my backyard, expanding my role in the carbon cycle, launching my own backyard campaign to offset global warming. My emissions, after all, reflect a rural but very comfortable life in which I enjoy goods that travel great distances - clementines from Spain, wine from California - and on the occasional holiday I fly south, seeking warmer places. Will planting rye in the shoulder seasons be enough to make a difference? Certainly not, but it is a gesture, a way to frame the question and provide a benchmark to judge the extent of my complicity.”

“If food was no longer obliged to make intercontinental journeys, but stayed part of a system in which it can be consumed over short distances, we would save a lot of energy and carbon dioxide emissions. And just think of what we would save in ecological terms without long-distance transportation, refrigeration, and packaging--which ends up on the garbage dump anyway--and storage, which steals time, space, and vast portions of nature and beauty.”

“Writing is my oxygen. Music is my carbon dioxide.”